Patents by Inventor Birgit Hirschberger

Birgit Hirschberger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fatty chemical polyalcohols as reagent thinners
    Patent number: 6433125
    Abstract: A process for producing coating compositions involving: (a) providing a reactive diluent, (b) providing an inert solvent, (c) providing a polymeric polyol, (d) providing an isocyanate, (e) reacting (a)-(d) in a reactive diluent comprising a ring opening product of a carboxylic acid ester epoxide with a dihycric or higher alcohol.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: August 13, 2002
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Roland Gruetzmacher, Ulrich Nagorny, Wolfgang Gress, Rainer Hoefer, Andreas Heidbreder, Birgit Hirschberger